Showing 1–16 of 16 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Morimasa Kaminishi | Ricoh Company | 22 |
| 2 | Yasuhisa Sugawara | Nec Tokin | 19 |
| 3 | Masami Ishijima | Nec Tokin | 10 |
| #4 | Tadamasa Asami | Nec Tokin | 8 |
| #5 | Fumihiro Sakuma | Keihin | 5 |
| #5 | Yusuke Hoshina | Tokin | 5 |
| #5 | Noriyu Nagata | Walbro | 5 |
| #8 | Junichi Umetsu | Hoxan | 4 |
| #8 | Jun Konda | — | 4 |
| #8 | Kenichi Herai | — | 4 |
| #11 | Masatoshi Jinno | Yoshiki Industrial Co. | 1 |
| #11 | Michihiro Yashima | Tohoku Ricoh Co. | 1 |
| #11 | Yasuo Endoh | Ricoh Company | 1 |
| #11 | Norimitsu HOSHI | Tokin | 1 |
| #11 | Yasuhiro Sakuma | Toppan Printing Co. | 1 |
| #11 | Kaminishi Morimasa | Ricoh Company | 1 |